Shaft-coupling.



No. s9|,274. Patented Ian. l4, I902.

. J KENNEDY.

SHAFT COUPLING.

(Application filed Nov. 2, 1901.) (No Model.)

. r a l H I0 -9 ym'uzss s I v T; I 10 mvau'ron UNITED STATES PATENTOFFICE.

JULIAN KENNEDY, OF PITTSBURG, PENNSYLVANIA.

SHAFT-COUPLING.

SPECIFICATION forming part of Letters Patent No. 691,274, dated January14, 1902. Application filed November 2, 1901. Serial No. 80,898. (Nomodel.)

To all whom it may concern.-

Be it known that I, JULIAN KENNEDY, of Pittsburg, Allegheny county,Pennsylvania, have invented a new and useful Shaft-Coupling, of whichthe following is a full, clear, and exact description, reference beinghad to the accompanying drawings, forming part of this specification, inwhich- Figure 1 is a side elevation showing a portion of a rollconstructed in accordance with my invention. Fig. 2 is an end elevationof the spindle end of the roll-neck. Fig. 3 is a side elevation of thedriving-spindle. Fig. 4 is an end elevation of the spindle. Fig. 5 is anend elevation of the coupling-box, and Fig. 6 is a horizontal section ofthe box.

My invention relates to shaft-couplings, and particularly to thecouplings between a vibrating spindle and a roll, and is designed toimprove such couplings, reduce lost motion, and lengthen their life.

Heretofore in roll-couplin gs the spindle ends of the roll-neck and thecorresponding end of the driving-spindle have been formed in cross shapeor with three or four radial arms, such arms fitting loosely incorresponding recesses of the coupling-box. As the roll is adjusted upand down and'is not in actual alinement with the spindle,there is arocking movement of the cross-shaped ends in the recesses of the box,whichnecessitates the rounding or curving of the arms, and thus reducesthe bearing-surface. A large amount of lost motion is necessary, andunder the jars and shocks to which the couplings are subjected they wearout quickly. Myinvention largely overcomes this difficulty, increasesthe bearing-surface in the coupling, and reduces the lost motion, thusenabling the coupling to last much longer than those now used; and itconsists in providing the roll-neck or driven shaft with twooppositely-projecting lugs or arms,

-whicl1 fitwithin two of the recessesv in the coupling-box, thedriving-spindle also having two opposite lugs engaging the other tworecesses of the coupling-box and lying in a plane at substantially rightangles to the plane of the lugs on the roll-neck or shaft.

It further consists in a latch device for holding the coupling-blocks inplace and in certain features of construction hereinafter described andclaimed.

drical end portion of the spindle.

In the drawings, 2 represents a rollhaving its neck 3 provided at theend with oppositely-projectinglugs 4 4. These lugs are longitudinallycurved upon their outer longitudinal edges, as shown in Fig. 1, and arealso transversely curved upon these faces, as shown in Fig. 2. Theyproject beyond the end of the neck, leaving a recess 5 between them toreceive the lugs upon the spindle. The end 6 of the spindle is alsoprovided with a pair of opposite arms 7 7, which are similar in generalshape to the arms upon the rollneck. The cylindrical end portion of thisspindle is provided upon opposite sides with small curved lugs 8 8,which project in opposite directions at right angles to the generalplane of the lugs or arms.

The coupling-box 9 (shown in Figs. 5 and 6) is hollow and provided withfour recesses 10;

having outer curved faces 11 to fit the trans versely-curved faces ofthe lugs or arms upon the roll-neck and the spindle, respectively. Whenthe parts are assembled, the coupling is slipped over the lugs on theroll-neck, the lugs upon the spindle are moved into the other tworecesses, and the box is held in place by latch devices 12, which arebolted across one face of the coupling-box and are provided with curvedslots 13, engaging the correspondingly-curved lugs upon the cylin- Inthe operation of the device the rotation of the spindle drives the box,and thereby the roll, and the box rocks or wabbles upon the spindle-lugsand the roll-neck lugs,the longitudinally-curved faces of these lugsallowing such movement, while the outer fiat parallel faces of both'setsof lugs fit neatly within the recesses and bear upon their sides. Muchcloser fitting of the parts can thus be obtained and the amount of lostmotion and shocks incident thereto are avoided. The parts are easilydisconnected by sliding the box (andwise after releasing the latches.The device works smoothly and is long-lived.

Many variations may be made in the form and arrangement of the lugs orarms, the box, and the latch or holding device without departing from myinvention.

I claim 1. In a shaft-coupling, acoupling-boxhaving four recesses, ashaft having a pair of oppositely-projecting lugs engaging two of saidrecesses,and a driving-spindle also having two oppositely-projectinglugs arranged to engage the other recesses of the box; substantially asdescribed.

2. In a shaft-coupling, a neck or-shaft having a pair ofoppositely-projecting lugs with longitudinally-curved edges, adriving-shaft 0r spindle having a pair of similarly-shapedoppositely-projecting lugs, and a box having four recesses arranged toreceive the lugs of the shaft at right angles to those of thedriving-shaft or spindle; substantially as described.

3. In a shaft-coupling, a driving and a driven shaft,each having a pairof oppositelyprojecting lugs, a coupling-box having recesses receivingthe lugs at right angles to each other and arranged to be slid back uponone of said shafts, and a device for normally holding the boxinposition; substantially as described. I

4. In ashaft-coupling, a driving and a driven shaft,ea'ch having a pairof oppositelyprojecting lugs, a coupling-box having four recessesreceiving the pairs of lugs at right- JULIAN KENNEDY.

itnesses:

H. M. CORWIN, L. M. REDMAN.

